Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Calculation of Pressure Rise in the Puffer Cylinder of EHV GCB Without Arc

무부하시의 초고압 GCB의 파퍼실린더 내부의 상승압력 계산

  • Park, K.Y. (Korea Electrotechnology Research Institute) ;
  • Song, K.D. (Korea Electrotechnology Research Institute) ;
  • Choi, Y.K. (Korea Electrotechnology Research Institute) ;
  • Shin, Y.J. (Korea Electrotechnology Research Institute) ;
  • Song, W.P. (Hyosung Industries CO. R&D Dept.) ;
  • Kang, J.H. (Hyundai Heavy Industries CO. H. V. Circuit Breaker R&D Dept.)
  • 박경엽 (한국전기연구소 개패장치연구팀) ;
  • 송기동 (한국전기연구소 개패장치연구팀) ;
  • 최영길 (한국전기연구소 개패장치연구팀) ;
  • 신영준 (한국전기연구소 개패장치연구팀) ;
  • 송원표 (효성중공업(주) 기술연구소) ;
  • 강종호 (현대중공업(주) 고압차단기부)
  • Published : 1994.07.21
Download PDF
⟨ Previous Next ⟩

Abstract

At present, the principle of puffer action in high current interruption is adopted in almost of the EHV(Extra High Voltage) and UHV(Ultra High Voltage) GCB(Gas Circuit Breakers). The thermal interruption capability of these GCBs critically depends on the pressure rise in the puffer cylinder at current zero. The pressure rise in the puffer cylinder depends on the puffer cylinder volume, flow passage and leakage area in the interrupter, stroke curve etc. Recently commercial CFD(Computational Fluid Dynamics ) packages have been widely adopted to calculate the pressure distribution in the interrupter. However, there are still several problems with it, e.g. very expensive price, moving boundary problem, computation time, difficulty in using the package etc. Thus, the calculation of the puffer cylinder pressure in simple and relatively correct method is essential in early stage of GCB design. In these paper, the model ing technique and computed results for EHV class GCB (HICO, 145kV 40kA and 362kV 40kA GCB) are presented and compared with available measured results.

Keywords